let list1:number[] = [1,2,3,4];
let list2:Array<number> = [1,2,3,4];
let list3=[1,2,3,4];

//tuple
let list4=[1,'hello',false];
let list5:[number,string,boolean]=[2,'yes',true];
let list6:any[] = [1,'world',true];

//extensible tuple
let list7=[];
let list8=[null];
let list9=[undefined];
let list10:[string,...number[]]=['a'];
